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Another salient point is that observing even one acid-fast bacillus in any of 3 or even 6 sputum samples of patients with a history of TB is just reported with a high emphatic by laboratory technical personnel and more importantly the physician has taken it into consideration and the patient's test result is considered positive, whereas for patients without history of TB there is no such a high sensitivity and most likely, in such cases (for example, a bacillus in 6 numbers of sputum) the physician will wait for the result of the culture to a final decision to be taken as a result of cultivation.
Mycobacterium kansasii is an acid-fast bacillus that causes pulmonary and extrapulmonary disease in immunocompromised patients, such as in HIV [8], type 2 diabetes [9], and organ-transplanted individuals [10].
Bronchoalveolar lavage was negative for acid-fast bacillus. A pulmonary disease consultant reported presumed tuberculosis because of the patient's history.